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"Burgess, Lesley"
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Randomized, Placebo-Controlled Trial of Mipomersen in Patients with Severe Hypercholesterolemia Receiving Maximally Tolerated Lipid-Lowering Therapy
by
Ceska, Richard
,
Soran, Handrean
,
Tardif, Jean-Claude
in
Alanine
,
Alanine transaminase
,
Anticholesteremic agents
2012
Mipomersen, an antisense oligonucleotide targeting apolipoprotein B synthesis, significantly reduces LDL-C and other atherogenic lipoproteins in familial hypercholesterolemia when added to ongoing maximally tolerated lipid-lowering therapy. Safety and efficacy of mipomersen in patients with severe hypercholesterolemia was evaluated.
Randomized, double-blind, placebo-controlled, multicenter trial. Patients (n = 58) were ≥18 years with LDL-C ≥7.8 mmol/L or LDL-C ≥5.1 mmol/L plus CHD disease, on maximally tolerated lipid-lowering therapy that excluded apheresis. Weekly subcutaneous injections of mipomersen 200 mg (n = 39) or placebo (n = 19) were added to lipid-lowering therapy for 26 weeks.
percent reduction in LDL-C from baseline to 2 weeks after the last dose of treatment. Mipomersen (n = 27) reduced LDL-C by 36%, from a baseline of 7.2 mmol/L, for a mean absolute reduction of 2.6 mmol/L. Conversely, mean LDL-C increased 13% in placebo (n = 18) from a baseline of 6.5 mmol/L (mipomersen vs placebo p<0.001). Mipomersen produced statistically significant (p<0.001) reductions in apolipoprotein B and lipoprotein(a), with no change in high-density lipoprotein cholesterol. Mild-to-moderate injection site reactions were the most frequently reported adverse events with mipomersen. Mild-to-moderate flu-like symptoms were reported more often with mipomersen. Alanine transaminase increase, aspartate transaminase increase, and hepatic steatosis occurred in 21%, 13% and 13% of mipomersen treated patients, respectively. Adverse events by category for the placebo and mipomersen groups respectively were: total adverse events, 16(84.2%), 39(100%); serious adverse events, 0(0%), 6(15.4%); discontinuations due to adverse events, 1(5.3%), 8(20.5%) and cardiac adverse events, 1(5.3%), 5(12.8%).
Mipomersen significantly reduced LDL-C, apolipoprotein B, total cholesterol and non-HDL-cholesterol, and lipoprotein(a). Mounting evidence suggests it may be a potential pharmacologic option for lowering LDL-C in patients with severe hypercholesterolemia not adequately controlled using existing therapies. Future studies will explore alternative dosing schedules aimed at minimizing side effects.
ClinicalTrials.gov NCT00794664.
Journal Article
Evinacumab in Patients with Refractory Hypercholesterolemia
by
Baum, Seth J
,
Ebenbichler, Christoph F
,
Rosenson, Robert S
in
Adult
,
Angiopoietin
,
Angiopoietin-like Proteins - antagonists & inhibitors
2020
Angiopoietin-like 3 is an inhibitor of lipoprotein lipase. Evinacumab is a monoclonal antibody that inhibits angiopoietin-like 3, activating lipoprotein lipase. In patients with hypercholesterolemia that is refractory to statin and PCSK9 inhibitor therapy, the use of evinacumab reduced plasma lipid levels by more than 50% at the maximum dose.
Journal Article
A 52-Week Placebo-Controlled Trial of Evolocumab in Hyperlipidemia
by
Blom, Dirk J
,
Lillestol, Michael J
,
Monsalvo, Maria Laura
in
Adult
,
Aged
,
Antibodies, Monoclonal - adverse effects
2014
Patients with hyperlipidemia were assigned to receive the PCSK9 antibody evolocumab or placebo on a background of lipid-lowering therapy. At 52 weeks, the least-squares mean reduction in LDL cholesterol from baseline for evolocumab versus placebo was 57%.
Proprotein convertase subtilisin/kexin type 9 (PCSK9), a serine protease that is produced predominantly in the liver, is secreted into the plasma and plays a major role in regulating levels of low-density lipoprotein (LDL) cholesterol by binding to hepatic LDL receptors and promoting their degradation.
1
,
2
In short-term (8-to-12-week), placebo-controlled, phase 2 trials, PCSK9 inhibitors have been shown to significantly reduce LDL cholesterol levels.
3
–
9
Four of these trials involved the use of evolocumab (AMG 145), a fully human monoclonal PCSK9 antibody, and assessed different doses and regimens in diverse patient populations with varying lipid phenotypes, cardiovascular disease risks, and baseline . . .
Journal Article
PCSK9 inhibition with evolocumab (AMG 145) in heterozygous familial hypercholesterolaemia (RUTHERFORD-2): a randomised, double-blind, placebo-controlled trial
by
Hovingh, G Kees
,
Olsson, Anders G
,
Civeira, Fernando
in
Adolescent
,
Adult
,
Antibodies, Monoclonal - administration & dosage
2015
Heterozygous familial hypercholesterolaemia is characterised by low cellular uptake of LDL cholesterol, increased plasma LDL cholesterol concentrations, and premature cardiovascular disease. Despite intensive statin therapy, with or without ezetimibe, many patients are unable to achieve recommended target levels of LDL cholesterol. We investigated the effect of PCSK9 inhibition with evolocumab (AMG 145) on LDL cholesterol in patients with this disorder.
This multicentre, randomised, double-blind, placebo-controlled trial was undertaken at 39 sites (most of which were specialised lipid clinics, mainly attached to academic institutions) in Australia, Asia, Europe, New Zealand, North America, and South Africa between Feb 7 and Dec 19, 2013. 331 eligible patients (18–80 years of age), who met clinical criteria for heterozygous familial hypercholesterolaemia and were on stable lipid-lowering therapy for at least 4 weeks, with a fasting LDL cholesterol concentration of 2·6 mmol/L or higher, were randomly allocated in a 2:2:1:1 ratio to receive subcutaneous evolocumab 140 mg every 2 weeks, evolocumab 420 mg monthly, or subcutaneous placebo every 2 weeks or monthly for 12 weeks. Randomisation was computer generated by the study sponsor, implemented by a computerised voice interactive system, and stratified by LDL cholesterol concentration at screening (higher or lower than 4·1 mmol/L) and by baseline ezetimibe use (yes/no). Patients, study personnel, investigators, and Amgen study staff were masked to treatment assignments within dosing frequency groups. The coprimary endpoints were percentage change from baseline in LDL cholesterol at week 12 and at the mean of weeks 10 and 12, analysed by intention-to-treat. This trial is registered with ClinicalTrials.gov, number NCT01763918.
Of 415 screened patients, 331 were eligible and were randomly assigned to the four treatment groups: evolocumab 140 mg every 2 weeks (n=111), evolocumab 420 mg monthly (n=110), placebo every 2 weeks (n=55), or placebo monthly (n=55). 329 patients received at least one dose of study drug. Compared with placebo, evolocumab at both dosing schedules led to a significant reduction in mean LDL cholesterol at week 12 (every-2-weeks dose: 59·2% reduction [95% CI 53·4–65·1], monthly dose: 61·3% reduction [53·6–69·0]; both p<0·0001) and at the mean of weeks 10 and 12 (60·2% reduction [95% CI 54·5–65·8] and 65·6% reduction [59·8–71·3]; both p<0·0001). Evolocumab was well tolerated, with rates of adverse events similar to placebo. The most common adverse events occurring more frequently in the evolocumab-treated patients than in the placebo groups were nasopharyngitis (in 19 patients [9%] vs five [5%] in the placebo group) and muscle-related adverse events (ten patients [5%] vs 1 [1%]).
In patients with heterozygous familial hypercholesterolaemia, evolocumab administered either 140 mg every 2 weeks or 420 mg monthly was well tolerated and yielded similar and rapid 60% reductions in LDL cholesterol compared with placebo.
Amgen Inc.
Journal Article
Debates in Art and Design Education
by
Nicholas Addison
,
Lesley Burgess
in
art and design
,
Art-Study and teaching (Secondary)-Great Britain
,
Arts
2020,2021
Debates in Art and Design Education encourages student and practising teachers to engage with contemporary issues and developments in learning and teaching. This fully updated second edition introduces key issues, concepts and tensions in order to help art educators develop a critical approach to their practice in response to the changing fields of education and visual culture.
Accessible, comprehensive chapters are designed to stimulate thinking and understanding in relation to theory and practice, and help art educators to make informed judgements by arguing from a position based on theoretical knowledge and understanding. Contributing artists, lecturers and teachers debate a wide range of issues including:
the latest policy and initiatives in secondary art education
the concepts, skills and dispositions that can be developed through art education
tensions inherent in developing the inclusive Art and Design classroom
citizenship education within Art and Design teaching
new practices in community arts education
examining 'whiteness' in the sector
Debates in Art and Design Education is for all student and practising teachers interested in furthering their understanding of an exciting, ever-changing field, and supports art educators in articulating how the subject is a vital, engaging and necessary part of the twenty-first century curriculum.
Issues in Art and Design Teaching
by
Nicholas Addison
,
Lesley Burgess
in
Art - Study and teaching - Philosophy
,
Arts
,
Curriculum planning
2003
Issues in Art and Design Teaching draws together a range of pedagogical and ethical issues for trainee and newly qualified teachers of art and design, and their mentors in art and design education. Arguing for a critical approach to the art and design curriculum, the collection encourages students and teachers to consider and reflect on issues in order that they can make reasoned and informed judgments about their teaching of art and design. Among the key issues addressed include:
challenging orthodoxies and exploring contemporary practices
measuring artistic performance
art history and multicultural education
research in art and design education
transitions in art and design education: primary/secondary and secondary/tertiary
the role of art and design in citizenship education.
Introduction: core debates and issues Part 1. Transitions and shifts in teaching and learning Paradigm shifts 1. Recent shifts in US art education 2. Art and design in the UK: the theory gap Cross-phase transitions 3. Changing places? 4. In and out of place: cleansing rites in art education Part 2. Curriculum Issues Research in art education 5.Concerns and aspirations for qualitative research in the new millennium 6. Productive tensions: residencies in research Interdisciplinary 7. The role of language within a multimodal curriculum 8. The role of art and design in citizenship education 9. Thinking out of the box: developments in specialist art and design teacher education and ICT 10. Does visual literacy demand a head for heights Doubts and fears 10. Monsters in the playground: including contemporary art 11. Iconoscepticism: the value of images in education 12. Measuring artistic performance: the assessment debate and art educationThe principle of collaboration 13. Temporary residencies: student interventions in the gallery 14. Creative partnerships or more of the same? Moving beyond 'it reminds me of' 15. Challenging orthodoxies through partnership: PGCE students as agents of change Part 3. Towards an Ethical Pedagogy 16. Do hope and critical pedagogy matter under the reign of neoliberalism? 17. Loaded canons 18. Forming teacher identities in initial teacher education 19. Reflections on multicultural art history
Examining the readability of patient-informed consent forms
2010
Primary objective: To investigate the readability of informed consent forms (ICF) used at TREAD Research, a private clinical trial research unit located in Tygerberg Hospital. Secondary objective: To assess if there is a difference in readability between therapeutic areas, as well as a difference in readability over two time periods. Methods: The readability of 84 ICFs given to patients at TREAD Research between the years 2000 and 2009 was quantitatively assessed by means of the Flesch–Kincaid Reading Ease, Flesch–Kincaid Grade Level, and Gunning-Fog index. Results: The mean ± standard deviation (SD) Flesch–Kincaid Reading Ease score for the 84 ICFs was 46.60 ± 5.62 (range 33.2–65.6). The mean ± SD grade level was 12.13 ± 1.8 (range 8.3–14.9) using the Flesch–Kincaid formula and 13.96 ± 1.22 (range 10.3–16.6) using the Gunning-Fog index. Readability at grade level 8 was only found in 1.2% of all the ICFs assessed. No differences were found in readability between therapeutic areas or over the two time periods. Conclusions: The main finding is that these forms are too complex to be understood by average study participants and their families.
Journal Article
An evaluation of informed consent comprehension by adult trial participants in South Africa at the time of providing consent for clinical trial participation and a review of the literature
2019
Introduction: The informed consent process is a fundamental part of clinical trials and is driven by both a legal and ethical agenda. The process may be seriously compromised if trial participants sign the informed consent document without fully understanding its contents. In developing countries such as South Africa, this concern is important due to the potential vulnerability of these patients and their risk for research exploitation. Aim: To evaluate the understanding of 11 important components and concepts related to clinical research by adult trial participants in a developing country at the time of providing consent for trial participation. Methods: 46 consecutive adult patients who qualified and consented to being enrolled in ongoing cardiovascular risk clinical trials at TREAD Research in the Western Cape, South Africa, were included in this study. After giving informed consent, participants were subjected to both a close-ended (self-report) and an open-ended method (descriptive narrative) to assess their understanding of various components and concepts related to clinical research pertaining to the initial informed consent document. The descriptive narrative was recorded and then later transcribed and assessed by two independent assessors. Results: There was a marked difference between the two methodologies used to assess patient comprehension of the various components. With the exception of concepts voluntariness and right to withdraw, trial participants' understanding of the informed consent document was poor--especially with regard to the following concepts: randomization, risks, placebo and blinding. Higher levels of comprehension were obtained for the participant self-reports and lower levels for the narrative descriptions. Conclusion: The participant comprehension at this site was poor, and the process for taking informed consent subsequently needs to be modified so as to improve informed consent comprehension. Keywords: clinical trials, informed consent comprehension
Journal Article
The Use of Adenosine Deaminase and Interferon-γ as Diagnostic Tools for Tuberculous Pericarditis
by
Doubell, Anton F.
,
Reuter, Helmuth
,
Taljaard, J.J. Frans
in
adenosine deaminase
,
Adenosine Deaminase - analysis
,
Adult
2002
Traditional diagnostic tests for pericardial tuberculosis (TB) are insensitive and often require long culture periods, and this has led to more emphasis being placed on biochemical tests such as the pericardial adenosine deaminase (ADA) test. However, controversy exists as to its diagnostic utility. In addition, the use of interferon (IFN)-γ, which is a reliable indicator of pleural and peritoneal TB, has not been explored in pericardial effusions. We investigated ADA and IFN-γ levels in pericardial effusions of different etiologies.
A prospective study was carried out from February 1995 to February 1998 at Tygerberg Hospital (South Africa), with pericardial taps being performed under echocardiographic guidance. During this period, 110 consecutive patients presenting with large pericardial effusions were included in the study. Diagnoses were made according to predetermined criteria, and they included TB (n = 64), malignancy (n = 12), nontuberculous infections (n = 5), other effusions (n = 19), and effusions of uncertain origin (n = 10). The median ADA level in the tuberculous group was 71.7 U/L (range, 10.3 to 303.6 U/L), which was significantly higher than that in any other group (p < 0.05). With a cutoff level for ADA activity of 30 U/L, sensitivity was 94%, specificity was 68%, and positive predictive value was 80%. IFN-γ levels were determined in 30 subjects. The median IFN-γ concentration in the tuberculous group was > 1,000 pg/L, which was significantly higher than in any other diagnostic group (p < 0.0005). A cutoff value of 200 pg/L for IFN-γ resulted in a sensitivity and specificity of 100% for the diagnosis of pericardial TB.
Pericardial fluid levels of ADA and IFN-γ are useful in the diagnosis of tuberculous pericarditis.
Journal Article